Preparation method of non-magnetic texture NiV alloy baseband

A non-magnetic, alloy-based technology, applied in the usage of superconducting elements, superconducting devices, electrical components, etc., can solve the problems of alloy stacking fault energy decline, difficult to obtain high cubic texture content, etc., and achieve good cubic texture. Effect

Active Publication Date: 2011-08-17
深创超导(深圳)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the tungsten content reaches 9.3at.%, its Curie transition temperature drops below 77K, but with the increase of W content, the stacking fault energy of the alloy decreases sharply, so that the deformation texture of the base band changes from copper type to brass type Transformation, the subsequent recrystallization heat treatment is not easy to obtain high cubic texture content, thus limiting its practical application

Method used

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  • Preparation method of non-magnetic texture NiV alloy baseband
  • Preparation method of non-magnetic texture NiV alloy baseband
  • Preparation method of non-magnetic texture NiV alloy baseband

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Ni powder and V powder with a purity of 99.9% are Ni 88 V 12 Weigh and mix the powder according to the ratio, and then use a ball mill for ball milling. The ball mill speed is 300rpm, and the total time of ball milling is 10h. After being fully mixed, put the mixed powder into the mold; then put the mold filled with powder Put it into the spark plasma sintering equipment, pressurize and sinter under vacuum conditions, wherein the sintering pressure is 50Mpa, the sintering temperature is 850°C, and the time is 10min to obtain a compact, and then the pressed compact is placed in Ar4%H 2 The homogenization treatment was carried out under the protection condition of mixed gas at 1400°C, and the sintering time was 20 hours to obtain the initial billet; the initial billet was cold-rolled, the deformation amount of each pass was 5%, the total deformation amount was 99%, and the final thickness was 80 μm. Cold-rolled base strip; cold-rolled base strip in Ar4%H 2 Anneal at 550...

Embodiment 2

[0029] Ni powder and V powder with a purity of 99.99% are Ni 90.5 V 9.5 Weigh and mix the powder according to the ratio, and then use a ball mill for ball milling. The ball mill speed is 150rpm, and the total time of ball milling is 15h. After being fully mixed, put the mixed powder into the mold; then put the mold filled with powder Put it into the spark plasma sintering equipment, pressurize and sinter under vacuum conditions, wherein the sintering pressure is 30Mpa, the sintering temperature is 1000°C, and the time is 5min to obtain compacts, and then the pressed compacts are sintered under vacuum conditions at 1200°C Carry out homogenization treatment, the sintering time is 22h, obtain initial billet; Carry out cold rolling to initial billet, pass deformation amount is 10%, total deformation amount is 95%, finally obtain the cold-rolled base strip alloy base strip with the thickness of 90 μm; Rolled base strip in Ar4%H 2 Anneal at 550° C. for 30 minutes under a protectiv...

Embodiment 3

[0031] Ni powder and V powder with a purity of 99.9% are Ni 91 V 9 Weigh and mix the powder according to the ratio, and then use a ball mill for ball milling. The ball mill speed is 250rpm, and the total time of ball milling is 12h. After being fully mixed, put the mixed powder into the mold; then put the mold filled with powder Put it into the spark plasma sintering equipment, pressurize and sinter under vacuum conditions, wherein, the sintering pressure is 50Mpa, the sintering temperature is 900°C, and the time is 10min to obtain a compact, and then the pressed compact is placed in Ar4%H 2 The homogenization treatment was carried out under the protection condition of mixed gas at 1000°C, and the sintering time was 25 hours to obtain the initial billet; the initial billet was cold-rolled, with a deformation amount of 5% in each pass and a total deformation amount of 95%, and a final thickness of 60 μm was obtained. Cold-rolled base strip; cold-rolled base strip in Ar4%H 2 A...

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Abstract

The invention discloses a preparation method of a non-magnetic texture NiV alloy baseband, belonging to the technical field of high-temperature super-conduction coating conductor metal basebands and aiming to solve the problem that the magnetic performance and the cubic texture of the conventional Ni-W alloy baseband cannot meet the requirement of a YBCO (Yttrium Barium Copper Oxide) coating conductor on further wide application at the same time. The alloy baseband comprises the following components in percentage by atoms: 88-91at.% of Ni and 9-12at.% of V. In the preparation method, a powdermetallurgical method is adopted. The preparation method comprises the following steps of: (1) mixing initial powder and filling a mold; (2) preparing initial alloy billets; (3) deforming and rolling the initial billets; and (4) recrystallizing and thermally treating the cold-rolled baseband. The alloy baseband has the characteristics of non-magnetism, high cubic texture and the like.

Description

technical field [0001] The invention relates to a method for preparing a non-magnetic textured NiV alloy base tape for a coated conductor, and belongs to the technical field of high-temperature superconducting coated conductor metal base tapes. Background technique [0002] The second-generation high-temperature superconducting tape (YBa2Cu3O7-x, YBCO) is expected to be used in superconducting transformers, superconducting motors, and superconducting current limiters due to its superior performance over the first-generation bismuth-based (BSCCO) superconducting materials. and other strong electric field to realize its application. In the research and development of practical applications, the preparation of high-performance metal substrates is the key to obtaining high-performance coated superconductors. Since the metal alloy baseband plays an important role in supporting, epitaxial transition layer and superconducting thin film, and carrying part of the current, in order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/00C22C1/04C22F1/10H01B12/06
CPCY02E40/642Y02E40/60
Inventor 袁冬梅索红莉高忙忙邱火勤马麟刘敏田辉王营霞徐燕王金华
Owner 深创超导(深圳)科技有限公司
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